"compression was 125 - 170 PSI. Before I tore the engine down, it was 175-195 PSI"
My first two thoughts were EWS and compression. I'm back to compression.
I didn't want to take time to learn BMW coding when troubleshooting EWS and a parasitic amp draw. I went to these guys:
https://racehuggins.com/product/ms43...ilizer-delete/
I bought a DME and did the EWS fuse mod. It was reversible since the OEM DME was untouched.
How many cylinders are low compression? Are they next to each other?